Cephalopoda - Ammonitida - Olcostephanidae
Parent taxon: Spiticeras according to P. Zell et al. 2015
Sister taxa: Holcostephanus (Spiticeras) obliquelobatus, Spiticeras bilobatum, Spiticeras blancheti, Spiticeras correardi, Spiticeras multiforme, Spiticeras obliquenodosum, Spiticeras orientale, Spiticeras polytroptychum, Spiticeras pseudogroteanum, Spiticeras serpentinum, Spiticeras tripartitum, Bihenduloceras gregoryi
Subtaxa: Spiticeras (Spiticeras) indicum Spiticeras (Spiticeras) kiliani Spiticeras (Spiticeras) pricei Spiticeras (Spiticeras) spathi Spiticeras (Spiticeras) spitiensis Spiticeras (Spiticeras) subspitiense
Type: Ammonites spitiensis
Ecology: fast-moving nektonic carnivore
Distribution:
• Cretaceous of Antarctica (2 collections), Chile (2), Iraq (1), Mexico (1), Spain (1), United States (2: California, Oregon), Yemen (10)
• Jurassic to Cretaceous of Chile (1)
• Jurassic of India (2), United States (1: California)
Total: 23 collections including 26 occurrences